content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * --------------------------
   * AnnotationChangeEvent.java
   * --------------------------
   * (C) Copyright 2009, by Object Refinery Limited and Contributors.
   *
   * Original Author:  Peter Kolb (patch 2809117);
   * Contributor(s):   ;
   *
   * Changes:
   * --------
   * 20-Jun-2009 : Version 1 (PK);
   *
   */
  
  package org.jfree.chart.event;
  
  import org.jfree.chart.annotations.Annotation;
  import org.jfree.chart.util.ParamChecks;
  
  /**
   * An event that can be forwarded to any {@link AnnotationChangeListener} to
   * signal a change to an {@link Annotation}.
   *
   * @since 1.0.14
   */
  public class AnnotationChangeEvent extends ChartChangeEvent {
  
      /** The annotation that generated the event. */
      private Annotation annotation;
  
      /**
       * Creates a new <code>AnnotationChangeEvent</code> instance.
       *
       * @param source  the event source.
       * @param annotation  the annotation that triggered the event
       *     (<code>null</code> not permitted).
       *
       * @since 1.0.14
       */
      public AnnotationChangeEvent(Object source, Annotation annotation) {
          super(source);
          ParamChecks.nullNotPermitted(annotation, "annotation");
          this.annotation = annotation;
      }
  
      /**
       * Returns the annotation that triggered the event.
       *
       * @return The annotation that triggered the event (never <code>null</code>).
       *
       * @since 1.0.14
       */
      public Annotation getAnnotation() {
          return this.annotation;
      }
  
  }
  